Metal fly-screen.



E. T. BURROWES.

METAL FLY SCREEN.

APPLICATION FILED NOV. 17, 1913.

1 120 7 Patented Dec. 15, 1914.

IHE NORRIS PETERS CD PHOTO-LITHO. WASHINGTON, D. c.

1| FFICE.

EDWARD T. BURROWES, OF PORTLAND, MAINE.

METAL FLY-SCREEN.

Specification of Letters Patent. Patented De 15 1914.

Application filed November 17, 1913. .Seria1 No. 801,422. i

To all whom it may concern Be it known that I, EDWARD T. BURROWES, a citizen of the United States, residing at Portland, in the county of Cumberland and State of Maine, have invented certain new and useful Improvements in Metal Fly- Screens, of which the following is a specification.

This invention relates to fly screens, and the like, and more particularly to screens of this character having rigid frames made wholly of metal.

The objects of the invention are to provide improved means for connecting the parts of the frame, for produclng a neat, smooth corner structure, and for lmproving generally upon the finish and details of construction of screens of this character.

In order that the invention may be clearly understood, reference is had to the-accompanying drawing forming part of thls speclfication,gand in which,

Figure l is a fragmentary elevation of one form of my improved screen as it appears when finished; Fig. 2 is a cross section on the line of Fig. 1; Fig. 3 IS a cross section on the line 33 of Fig. 1; Fig. 4 is a fragmentary edge elevation showing the method of uniting the parts of the frame; Fig. 5 is a view of one of the corner pieces showing a slightly modified construction; Fig. 6 is a transverse section on the l ne 66 of Fig. 5; Fig. 7 is a transverse section through a side bar of the frame; Figs. 8 and 9 are sections showing different forms of molding which may be employed; F1g. 10 1s a section showing a method of securing a hinge member to the molding; and Fig. 11 is a fragmentary elevation of the parts shown in Fig. 10.

Referring to the drawings in detail, I propose to construct the screen frame of four corner pieces A, and four side members B, as in my former applications. Corner blocks or plates D are provided, against which abut the wire holding moldings G which secure the netting E to the frame.

In prior applications, I have described a method of forming the frame by means of electric welding, but as there are certain metals and alloys which do not lend themselves readily to welding, I have devised the method of uniting the corner pieces and side members shown in Fig. 4. By reference to this figure, it will be seen that each of the arms 1 andQ of the corner pieces is formed tapering or beveled, having near the corner a transverse shoulder 3. The end 5 of each of the side members B is similarly shaped and is provided with a transverse shoulder 4c. IVhen assembled, the end of the arm 1 rests against the shoulder 4, and the end of the side member B rests against the shoulder 3, the beveled faces of the two parts being substantially in contact throughout their length, and forming a scarf joint. The parts may be secured together by brazing or soldering, or by mechanical fastening de vices, such as rivets. In the finished screen the joint will be completely hidden by the molding and for this reason no especial care in finishing is necessary.

Instead of providing the corner pieces A with integral corner blocks, as in my prior applications, I may, as illustrated in the drawings, form suitably shaped corner blocks in two pieces and attach them to the corner pieces. In Fig. 3, for example, the two halves of the corner block are indicated by D and D, and it will be observed that the outer edges of these halves are bent over and around the corner piece, as indicated at 6 in Fig. 3. This, of course, results in forming at the edge of the frame, shoulders against which the ends of the molding C may abut so as to form a perfectly smooth, flush joint as illustrated in Fig. 1. The halves of the corner blocks may be provided with an extension 7 lying inside the angle of the corner piece and secured by means of a rivet 8, or the like. A screw or rivet 9 may also be employed, if desired, as shown in Figs. 1 and 3.

In Figs. 5 and 6, I have illustrated a slightly different form of corner construction. In these figures I contemplate the same method of joining the arms, such as 1,

to the side members, but the corner block has no extension such as 7 in Fig. 1, and terminates flush with the inside of the frame. The two halves of the corner block are designated at D and D and are bent around the outer edge of the corner piece in the same manner as in Fig. 8 to form shoulders 12, against which the molding. abuts. If desired, the inner face of one of the halves, such as D, of the corner block may be cut away adjacent the inside corner, as indicated at 10, to provide a notch or slot for the reception of the wire fabric.

' ing.

After the wire has been placed in position, the overhanging lip 11 (see Fig. 6) may be pressed or hammered down into firm engagement with the wire. The halves D and D are, of course, secured in position by means of a centrally disposed screw or rivet 9.

While I have shown the corner block as made in two separable detached halves, it will be apparent that the idea of forming the notch or groove for the reception of the wire may equally Well be employed in connection with the integral corner blocks shown in my prior applications.

Where the molding is made of some rustproof and ornamental metal, such as brass, bronze or copper, and the frame itself, for the sake of cheapness or strength, is made of a baser metal, such as iron or steel, it may sometimes be desirable to employ the construction shown in Figs. 2 and 7 for the purpose of entirely concealing the baser metal and giving the appearance of a construction made entirely of the higher priced metal. To this end, I propose to form a tongue 13 along the inner edge of the side members, as by milling a groove along each side, and to fit into these grooves and around the tongue a channel-shaped trimming 14 of the same material as the mold- By the use of this trimming it will be observed that the inner edge of the frame will be completely concealed, with the result that the entire screen will present the appearance of being made of solid bronze, or the like.

In place of the molding shown in Fig. 2,

I may, in some cases, employ a molding such as shown at C in Fig. 8, having the edges folded over upon themselves to form beads 15., This will give a smooth, finished appearance to the screen. Instead of a fiat molding as shown in Figs. 2 and 8, I may, in some cases, employ a molding such as shown at C in Fig. 9, having longitudinal grooves or flutes 16 formed therein.

.It is frequently desirable to provide means for mounting a screen of this character upon hinges, and in Figs. 10 and 11, I have illustrated a convenient method of attaching hinge members to the screen. lhese hinge members are in the form of loops 1'? made of sheet metal and having their ends, such as 18, passed through a slot in the edge of the molding and then bent in opposite directions as shown in Fig. 10. Thus, when the molding is applied to the frame when the parts of the screen are assembled, the hinge members 17 are rigidly carried by the screen andcan he slipped over fixed pintles mounted upon the part of the building to which the screen is to be hinged.

What I claim is:

l. A screen frame'comprising sidemembers and rigid corner pieces, each of such corner pieces consisting of a pair of arms and a corner block projecting beyond the surface of said arms on each side thereof, the corner piece having a notch or space'for the reception of wire netting formed be tween the corner block on one side and the arms.

2. A screen frame comprising side members and rigid corner pieces, each of such corner pieces consisting of a pair of arms and a substantially squalre corner block projecting beyond the plane ofsaid arms on each side thereof, the corner piece having a notch or space for the reception of wire netting formed between the inside corner of the corner block and the surface of one side of the arms.

3. In a screen, the combination with side members, of a wire holding molding of sheet metal constructed to embrace the same, and a hinge element having a portion extending through said molding, and riveted down, whereby said hinge element is secured to said molding.

4:. In screen, the combination with side members, of a wire holding molding of sheet metal constructed to embrace the same, and a sheet metal hinge element comprising a tubular portion, and a pair of flanges projecting therefrom, said flanges extending through openings in said molding and bent down so as to secure said hinge element to said molding. 5. In a screen, av frame, wire fabric stretched over said frame, a wire holding molding embracing said frame, and covering both sides and the outside edge thereof, and a sheet metal trimming secured to the inside edge of said frame, whereby all of said frame is entirely concealed.

6. In a screen, a rigid frame, wire'fabric stretched over said frame, a wire holding molding embracing said frame, and corner blocks against which the ends ofsaid molding abut, a pair of such corner blocks'being located at each corner of the screen, and the members of each pair being disposed on opposite sidesof the frame and riveted together. I

In testimony whereof I have affixed my signature, in presence of two witnesses.

EDWARD 'I. BURROWVES. Witnesses:

IDA F. MGNAIRN,

Anion M. GURNEY.

copies of this patent may be obtained for five cents each, by addressing the Oommissionerof Iatents.

' Washington, I). G. 

